Cisco WAN :: ASA5505 - Getting Multiple Public IPs?

Sep 20, 2011

For a branch office we have an ASA5505 connected to the ISP with an DHCP provided public IP "locked" to the local MAC This works ok!Now - the ISP may provide up to 5 public IP's (all DHCP assigned).Is it possible to configure 2-5 public interfaces in the ASA?? As IP's are DHCP assigned there must be something (a interface) to request the address.Would this be possible, and if so - what license would be required??NAT routing on the inside should be possible as well.

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Cisco Firewall :: ASA5505 Multiple Public IP NAT

Mar 9, 2013

I have three public IP:s from /24 network like 83.x.x.10, 83.x.x.25 and 83.x.x.41 all using netmask

I'm using 83.x.x.10 on ASA outside interface and trying to do static nat for inside servers with those other IP:s, but not yet solved it.
Using Cisco ASA 5505 software v9.02
object network obj_guest
nat (guest,outside) dynamic interface
object network obj_any
nat (inside,outside) dynamic interface
object network w2008


This works other networks that are like whole network with /29 mask and have router in front of ASA using bridge. But in my case i just have DSL modem bridged in front of ASA. This static nat works like should if i use like Zywall USG series fw and this same configuration works in my customers, but they have those scenarios i said having mask /29 and router in front...
It seems that the problem is in ASA, like i won't show those public IP:s to public router from my operator. Because if i roll those other public IP:s on my ASA:s outside interface: i will use 83.x.x.25 and 83.x.x.41 on outside interface and after that put back my original 83.x.x.10 then my static nat is working just fine, atleast few hours, but not in next morning because ISP router flushes ARP cache.

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Cisco VPN :: Public IP Address For ASA5505?

Sep 7, 2011

I have a ASA5505 that I need to allow IPSEC and SSL VPNs through. The ASA is connecting to a BT Business ADSL router, what address should I be using on the ASA outside interface that will allow the ASA to be reachable from the Internet?

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Cisco WAN :: ASA5505 Converting Private To Public IP For VPN

Aug 18, 2011

We have a VPN router(ASA5505) which connects to the client, B. IP address for one si 195.xx.xx.xx and for B it is 14.xx.xx.xx. Both can extablish a IPSEC VPN nicely.Now, B throws a condition that the IP coming thru the VPN has to be PUblic. They want it as such so that they can be routed across the VPN tunnel.It still can because the firewall does not do NAT.

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Cisco VPN :: ASA5505 VPN Private Network With IP Public

May 19, 2011

My partner imposes that i create a VPN connexion with CISCO ASA5505 and send requests by public IP  on my private network.Is it possible to create NAT rules with this possibility?

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Cisco VPN :: ASA5505 Tunnel Some Traffic (public Host) From Remote Site

Feb 6, 2012

On remote site I have Cisco ASA5505, on cental site I have Cisco 2811 router, working site-to-site VPN tunnel. [code]

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Cisco Firewall :: Using VLANs With ASA5505 For Private And Public Internet Access

Oct 2, 2012

I am trying to provide internet access to public and private SSID's on Cisco AP541n using VLAN's connected directly to ASA5505.  VLAN1 is inside interface (private) and VLAN12 is wlan interface (public SSID). The AP541n is plugged into switch port 0/7 on an ASA 5505.Port 0/7 is configured as trunk mode.  I have internet access when connected to private SSID but no internet access when connected to public SSID. why I can't access internet on public SSID? 
logging class ip history emergencies
mtu inside 1500
mtu outside 1500


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Cisco :: Multiple Public Subnets On Asa

Mar 2, 2012

I've currently got my ASA (5505) serving a /28 public subnet. I've ran out of IPs, so my DC has issued me an additional /24 subnet that they have routed to my ASA. What needs to be done on my ASA so be able to use these new addresses? I've been trying to search and not been able to find a good answer (some say I shouldn't have to do anything, everything else references NATing, which I currently don't do and would rather not do).The servers I assign these to, I'd like them to have the public ip assigned directly to them.

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Cisco WAN :: Configuring 861 NAT With Multiple Public IPs

Jan 20, 2012

I've replaced my dead ASA5505 with a 861-K9.Our ISP provides a subnet of public address /29 (wan side)  by example: /29,we have 3 servers (lan side) in the example /24 is the same case than Johnatan, the only difference are the public addresses. [URL], everything is ok when NAT via the FE4 public address, but when do the same with other public IPs doesn't work.

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Cisco WAN :: Multiple Public IP Addresses On 877W

Nov 23, 2011

I would like to configure an 877w I just bought. It's connecting to a UK ADSL2+ link.I'm a penetration tester and I want to put the Cisco router in front of my existing firewall which has an IPS on it, so that it doesn't get in the way of port scans and vulnerability scans. My ISP has issued me with 14 usable addresses a/240 subnet and basically I want to be able to use the route with just the public IP addresses. I have configured Cisco routers before, but never with this type of configuration. It's always been single public IP address  NAT'd through to one or two internal LAN's.
It will be nice if I could assign the wireless and fast ethernet ports to the same VLAN using the public addresses. I don't want to use DHCP I'm quite happy statically assigning IP addresses to the computers wireless and LAN interfaces. I am reasonably certain this is possible because not sure how to do it and a little busy at the moment carrying out penetration tests.

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Cisco Firewall :: Multiple Public IPs On ASA 5520?

Apr 28, 2013

I have ASA 5520 with Ver 8.2.Outside interface is directly connected to ISP's router(TelePacific) and is assigned one of public IP: are two servers inside the network with the private IP's: for DB Server, and for Web Server.I did Static NAT to  and to I access DB Server( it's working OK but when I access Web Server( there is no response at all.I checked the inside traffic, it even did not get into the firewall.Is this the problem with ISP's router?  How can we route all of our public IP's to the outside interface(

interface GigabitEthernet0/1nameif insideip address 100no shutdown
interface GigabitEthernet0/0nameif outsideip address


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Cisco Firewall :: ASA 5520 / Outside With Multiple IP Public?

Oct 16, 2012

I have ASA 5520 with Version 8.2(5), the ISP give me a block of IP pubic (, one IP valid ( have the Global NAT (all users LAN) and server FTP, but i need that IP is used for VCSe, and the IP is used for other server FTP.

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Cisco Routers :: RV220W - Multiple Public IPs?

Jan 29, 2013

I am configuring this new router for a client. I am running into an issue that I cannot get working. They use 5 public IP addresses. Currently the wan port on the router is .66 and I have all the ports forwarded to the correct internal IPs. This works fine. However I need to forward parts from other public IPs (ex: .67) to internal IPs. So far I have been able to accomplish this via the One to One NAT feature. It allows me to forward ONE port from a public IP to a private IP. However I need to forward 3 or 4 ports per public IP to a single internal address. Does this router not support that functionality?

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Cisco Firewall :: ASA 5505 - Multiple Public IP

Sep 10, 2011

Attached is my updated ASA 5505 (8.4[2]) config. With this config, basically the "laptop" group works fine, but the leo and orion groups don't ever receive packets inbound.  No DNS, nothing.
The laptop is windows, the other two are servers with two NICs.  The interface cards are Intel Pro/1000s.   I've been through everything including Vlan protocol conflicts and actually enabled the servers for 802.1(Q).

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Multiple Public IPs To Route To Server?

Jan 17, 2012

we need to implement a scalable solution where we can provide for each customer it's own public IP so that they can access some content restricted by IP range.the solution consists of a proxy software that will "listen" to multiple IP's, then reroute the HTTP requests and rewrite the URL's to a different format.Anyways, we came to the conclusion that what we need is the following:

- broadband line with a pool of 8 IP's
- a router that can support multiple IP's
- a server

what kind of router or device is required for this kind of configuration. basically the network diagram will be like this:

Internet ----> broadband -------> cable modem ------ > multiple static IP router -------> server NIC

we should be able to add the same above combination once we run out of IP's, another broadband line, another device and server ...

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Cisco Routers :: RVS4000 One-to-One NAT / Multiple Public IP Addresses

Mar 11, 2013

If there are any small business routers that offer one-to-one NAT? I have several public IP addresses assigned to me by CenturyLink. I have two servers that provide email and web hosting for two different domains. I want to put the client machines on one VLAN (VLAN Z) and assign it a public IP address (to keep server traffic separate). I want to put each server on its own VLAN (VLANs X & Y) and assign each server its own public IP address. I need the router to be able to provide a firewall and port forwarding for each VLAN. I also need to be able to route traffic between VLANs so the clients on VLAN Z can access their email and the websites on VLANs X and Y. I also need to be able to route DNS traffic between VLANs so each server can provide name resolution for their respective domains.
So, is this possible with a small business router or do I need to look at something different? I'm fairly certain this configuration is not possible with my current Cisco RVS4000. What it boils down to is I need a router that is capable of having multiple public IP addresses on the same interface and to forward those public addresses to private VLAN subnets. This would be one-to-one NAT if I understand it correctly..

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Cisco Routers :: RVS4000 - Multiple Public IP Addresses Go Into LAN

Aug 22, 2012

The client has a Cisco RVS4000. There are 3 Internet devices need to be accessed from the outside and will use one public IP for one device. I don't see any options to setup on Cisco RVS4000 to do 3 NATs. If Cisco RVS4000 doesn't work in this situation, which router will do?

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Cisco Firewall :: Multiple Public IP Addresses On ASA 5505?

Sep 8, 2011

Is it possible to two or more public IP Addresses bound to a Cisco ASA 5505 running 8.4(2).

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Routers / Switches :: Setup Multiple Public IP's?

Apr 7, 2011

At my company, we lease 3 static public IP addresses from 1 ISP. We want to have 3 separate networks that each use one of the IP addresses. Network 1 is the computer network, network 2 is the VOIP network, and network 3 is the security camera network. I am trying to determine the best way to do this. I have come up with 2 solutions in my head, but I'm not sure if they will work or not. I would like to get some input. Solution 1:Solution 1 looks something like this. Fiber box -> Router-> 3 switches. There would be one WAN input on the router, that would have a static route to 3 different LAN ports. For example, address would be assigned to LAN port 1, would be assigned to LAN port 2, and would be assigned to LAN port 3 (by assigned, I mean have a static route to it). Is there some type of router that is capable of doing this? Solution 2:Solution 2 looks something like this. Fiber box -> Switch -> 3 Routers. The ethernet cable would run from the Fiber Box to a switch, and then 3 routers would be plugged into the switch. Each router would have the Static information configured in them. Would both of these methods work? If so, which would be the best way to go?

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Get Multiple Public IP Address From The Modem Using Switch?

Jan 25, 2013

My ISP assigns IP's through a standard motorola cable modem via DHCP server. I can pay extra for a persistent IP which uses the MAC of my switch and assigns an IP. Is there a way to get multiple public IP address's from the modem using a switch?For example. Can I plug the modem into the switch and then plug a computer server into the switch and get an IP assigned to that servers MAC address and then also have another server attached to another port on the switch and get a different public IP for that servers MAC address?

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Set DMZ With Multiple Devices On A Single Public Address?

Apr 9, 2013

I have a i-ball 150M wireless-N ADSL2+ Router device in that , in the NAT tab, i have activated DMZ at my static ip with a private address , so that that ip enabled device can be access to anywhere in public network.I want that using this single static ip , How to configure two private address devices in DMZ, so that both of ip enabled devices can be access in public network.

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Multiple Public IP Addresses From Different Subnets On 1 Router

Feb 20, 2012

Is it possible to have multiple public IP addresses that are from different subnets going through one router? I have been told that this is not possible with most routers and that I would have to spend a lot of money on a router to be able to do it. I am still not totally clear on what defines a subnet even after reading up on them. What I am trying to achieve:

-My office has 10 computers.

-All would be connected to one router.

-My internet service provider has provided me with 10 public IP addresses, that are all very varied (which I asked for)

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Cisco Firewall :: ASA5505 With Multiple WAN IPs?

Jul 24, 2012

We are trying to utilize a 5 ip block of addresses provided by our ISP. What we have assigned from them is like this: - is our ip range. is the gateway. Subnet is If we assign to the outside interface how do we accept inbound traffic from the other addresses?

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Cisco Routers :: Does RSV4000 Support Multiple Public IP Addresses

Aug 3, 2011

I have a customer that has an RSV4000 Router. The customer has also purchased a block of 5 usable public IP addresses. I need to be able to assign these public IP addresses to printers either by configuring a static IP on each printer directly or thru IP mapping or some other method. Does the RSV4000 support using multiple public IP addresses and if so what configuration is needed in the router for the printers to be seen by the outside world.

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Cisco Firewall :: ASA 5510 - How To Assign Multiple Public IP Addresses

Dec 2, 2010

I'm currently replacing my ASA 5505 with a 5510. I have a range of public IP addresses, one has been assigned to the outside interface by the setup wizard (e.g. ) and another I would like to NAT to an internal server (e.g > On my asa 5505 this seemed fairly straigh forward, i.e. create an incoming access rule that allowed SMTP to and then create a static nat to translate to Since I've tried to do the same on the 5510 traffic is not passing through so I'm assuming that the use of additional public IP addresses is not handled in the same way as the 5505? I also see that by default on the 5505, 2 VLANs are created, one for the inside and one for the outside, where as this is not the case on the 5510. Is the problem that VLANs or sub-interfaces need to be created first?  I'm doing the config via ASDM.
Everything else seems to OK i.e. access to ASDM via, outbound PAT and the site-to-site VPN.

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Cisco VPN :: ASA5505 And Spoke VPN Between Multiple Sites

Aug 12, 2012

I currently have a "hub" ASA 5505 that links to 4 sites running 877 routers. From the hub network i can connect to all sites fine but what i would like to do is to almost compartmentalise the various VPN links into little clusters.The hub ASA 5505 basically provides IP telephony through the VPN's from a PBX allowing the users at the other end of the VPN to make outgoing calls and recieve incoming calls. However, a couple of the sites would like to be able to call between eachother internally via the hub. This obviously requires traffic to be allowed between their various networks. Currently when you attempt an internal call it rings but there is no audio either way. I assume this is due to access list restrictions. I am not even sure whether what I am trying to achieve is possible. I've attached the hub and 2 spokes below. The ideal end result would be interconnectivity between the two spokes via the hub, from reading up it would seem that its possible but i can't quite get my head around it! Would it involve using different subnet masks at the hub?

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Cisco VPN :: VPN Setup On ASA5505 With Multiple VLANs?

Jun 17, 2012

I'm trying to setup a VPN connection for the two PC's in the graphic below. I have the link between the two locations setup and secured, now I just working with the routing elements.what I need to add to the firewall config in order to get this to work? Here is what I have:
SITE A------access-list mpls_vpn_sitea extended permit ip host host access-list mpls_vpn_sitea extended permit ip TEST-LOCAL TEST-REMOTE map mpls_vpn 1 match address mpls_vpn_siteacrypto map mpls_vpn 1 set peer crypto map mpls_vpn 1 set transform-set ESP-3DES-SHAcrypto map mpls_vpn interface MPLScrypto ipsec transform-set ESP-3DES-SHA esp-3des esp-sha-hmac
SITE B------access-list mpls_vpn_siteb extended permit ip host host access-list mpls_vpn_siteb extended permit ip TEST-LOCAL TEST-REMOTE map mpls_vpn 1 match address mpls_vpn_sitebcrypto map mpls_vpn 1 set peer crypto map mpls_vpn 1 set transform-set ESP-3DES-SHAcrypto map mpls_vpn interface MPLScrypto ipsec transform-set ESP-3DES-SHA esp-3des esp-sha-hmac

do I need to specify a route between the two networks? What do I need to have for NAT statements?

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Cisco Firewall :: ASA 5505 8.4(1) - Map Multiple Inside Hosts Ports To One Public IP?

Jun 22, 2011

I'm stuck at asa 5505 nat, port forwarding configuration Here is what i need:

host1: service tcp/100 >>>>> public ip service tcp/100
host2: service tcp/200 >>>>> public ip service tcp/200
host3: service tcp/300 >>>>> public ip service tcp/300
So people from remote just need to use public ip to access all the ports on three different inside server.I can do this on my old ASA 5505 with 8.0(4). Looks like there're lots of change from 8.0 to 8.4.

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Netgear FVX538 / Setup Multiple Public IP Addresses In Network

Aug 9, 2011

I have a Netgear ProSafe VPN Firewall FVX538. But I also have 10 Public IP Addresses that I will like to setup for three web services. So how do I set this up. With multiple routers. Or can my Netgear FVX538 take multiple Public IP Addresses to the same ports. If not how can setup multiple routers. one being the main one.

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Cisco Firewall :: Multiple Static Port Translations On ASA5505

Aug 15, 2011

I am at a loss on configuring a new ASA5505 for multiple static port translations.I would have expected to simply add several service command to a network object to complete the task, however, the service command overrides the previous and replaces rather than adds to the translations. [code] However, if entered in that order the 8443 overwrites the 8080 static translation.What is the correct procedure to establish multiple translations? If someone could also provide the "old" style for pre 8.2 release, I'd like to compare because I thought I used to do this with an access-list somewhere.

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Cisco VPN :: ASA5505 - Multiple Distinct Inside Subnets And VLANs?

Nov 17, 2011

The ASA device is going to be the gateway for multiple distinct inside IP subnets.   We can have have a unique outside IP address to correspond to each inside IP subnet if needed, but we need some means for a VPN client or a site-to-site VPN to have acess to a pre-definied IP subnet (i.e. if customer A establishes a VPN connection, they have connectivity to IP subnet X; customer B establishes a VPN connection, they have connectivity to IP subnet Y, etc.).Currently, the two inside IP subnets are and We will be adding more.The problem we are facing is that we cannot reach the VLAN 201 from the ASA we believe this is because. I have setup two addresses on port 0/1 Vlan1, and as an alias. How can we make traffic for the subnet untagged and traffic for the subnet tagged for VLAN 201.

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Cisco Switching/Routing :: ASA5505 / Network Design With Multiple Gateways?

Apr 11, 2013

remote location on MPLS circuit terminated on a Cisco router that has Internet connectivity through Central Site router.  We are installing a cable modem at the remote location that is to be used  as the Primary Internet Connection but still be able to use Internet through MPLS if the cable Internet goes down.  We want the failover/fallback to be handled automatically.
We have an ASA5505 for the cable Internet which then feeds into the ISPs modem. 
At first I was thinking about getting a module for the remote router so the cable Internet could be terminated on the remote router as well but that introduces a single point of failure.  I would also like to firewall both the MPLS and the cable Internet but if I do so on the ASA there is another single point of failure.

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Cisco Firewall :: ASA5505 Using Outside Interface To Connect To Multiple Machines Inside

Oct 28, 2011

I have been working on a configuration for single IP address (on outside ) of ASA5505.I am trying to utilize the outside address to PAT/NAPT to 10 inside machines [code]
What I am not sure of (actually that could be considered all encompassing) is the mapped services/real services.Any constructive comments assistance?

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